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get_refresh_rate(3)             Allegro manual             get_refresh_rate(3)

NAME
       get_refresh_rate - Returns the current refresh rate. Allegro game
       programming library.

SYNOPSIS
       #include <allegro.h>

       int get_refresh_rate(void);

DESCRIPTION
       Returns the current refresh rate, if known (not all drivers are able to
       report this information). Returns zero if the actual rate is unknown.

SEE ALSO
       request_refresh_rate(3)

Allegro                          version 4.4.2             get_refresh_rate(3)